I received a call a 1:03 a.m. (EST) from 310-439-9721.   I had to get out of bed and find the phone and when I finally did and picked up my answering machine was on.   I depressed the receiver to shut off the answering machine but accidentally disconnected the call.   When I picked up I could hear a recorder stating that it was some kind of security call.   I tried calling 310-439-9721 and the phone just rang and rang, no one picked up.   Finally a recording came on stating that "your party is not picking up".